掺镱光纤老化与老化致非线性效应研究进展

High power ytterbium doped fiber laser has important application value in industry, scientific research, national defense and other fields.However, with the continuous improvement of the output power, the aging problem of the laser has become increasingly prominent, which has become one of the key bottlenecks limiting the further improvement of the power and stability of the fiber laser.This paper reviews the latest research progress in aging of high -power ytterbium doped fiber lasers by domestic and foreign research institutions, mainly covering the photon darkening effect (PD), radiation -induced darkening effect (RD), and the nonlinear effects caused by aging, and focuses on the formation mechanism, damage phenomenon and suppression methods of these effects.